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`that the following, drawings which acco'n'pauy and form part of this strat Whittie.

HUGH "M.j` PHINNEY, or GAMBeinen7 MASSACHUSETTS.-

Leners Para: N0.1o2,967, creamy 10,1870.

` VENTILATOR-REG-ISTER.

The` Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, HUGH M. Palmier, of Cambridge', in the county. of Middlesex and State of Massachusetts, have invented. an Improvement in Ventlator-Registers; and I do hereby 'declar taken in` connection with 1the speciiicatlion, is a description of my invention suicient to enable. thosepskilleduin the art to practice it. My invention relates to the construction of ven-v tilator-registers, with particular reference to the manmer of applying the ventilator-blades or valves toa ring, which ring is removably attached to a thimble, to be set in 'the wall of the room, so that the "entilator, while having provision `for being `adjustalbly opened to whatever extent is desirable," may be wholly removed from `the thimble and as one piece, thus enablingthe same thimble to be used for reception of a stovefunnel,a close stopper, or the ventilator` valves or blades and theiroperating mechanism.

My invention consists primarily in a 4ventilator-register, which has provision for attachment `to and re- `moval from a'ue-thxnble` to be set in the wall of a. room, wh'cn the 'register is so constructed that the i thimble forms the frame in; which the ventilatorblades or valves swing, thel valves being pivoted to the ornamentalring or open-work' plate which can-ies the valve-operating-levers.

i The drawings represent a bodying'my invention.

Aj shows a front view of theregister.

ventilator-register ein` B, a cross-section on `the line a: x. i

" 0, a cross-section onthe line y y.

D, a view of the thimble and the register-.valve mechanism detached.` l y i a denotes a round or cylindrical metal'thimble, which, setting into the wall of .a room, `forms the `mouth of the ventilati ng-1ue,Ethe` fi'ont of thethimble being made with 1an` inwardly-projecting andan outwardly-projecting ange, c.

d denotes a metal rirn or'ringcrossed andiilled out from the front face of the ring, as seenat D, a Vboni o r bearing, c, -being formed at `the center of the register for supporting a pin, j, upon the outer end of which is fixed a` center-piece or hub, g, having projecting from it radial arms or levers hlt and i i.

'The pin f extends through the open register, and

upon its inner end is supported-,a cross-bar, It, vextending diametrcally across -the back of' the ring d,

i the ends of the bar being widened o1' ,extended lat- Each valve o j) is semicircular, or nearly so, in shape, and has, at the' opposite ends of its straight edge; the pivots n, upon which it swings, to carry it from closed positiona'gainst thering toa more or less open position, as seen at A B C.

From'the front face of one of the valves o, at one end thereof, and from the front face of the valves 1'), at the opposite end thereof', extends an arm, q, Vand `each varm q is straddled by a fork, lr, extending from the adjacent end `o'v the radial arm or lever h.

Cords being attached to eyes s at the outer ends 'of theftwo -arms t t, thefarrns h h areturned by pulling upon one or the other of' such cords, and as they turnthey operate upon the arms g and turn the valves upon their pivots, soas to open or close the valves, as occasion may require.

To fasten the hub g firmly to the Aregister-ring,

and so as to admit at the same time o f its freely moving rota-tively, I form the piu f as a screw, and

place upon it two nuts, .t u, one, t, on the inner side of the bar It, and the other, u, at the bottom of the box e, so that, by screwing up the nut t, the screw is clamped tightly in position, while the hub g, confinedl between the head c of the screw-pin and the nut in can turn freely upon the pin'.

To'keep the valves from swinging too freely, however, I placev between the hub and the nut u a coiled spring, w, and, by turning up the nut u, the friction of the hub between the end of the spring p and the head of the screw may be increased morel or less, to whatever extent it is desirable,'to bindl the hub g. l

It will be seen that the valve-operating mechanism has no connection with the thimble a, the valves being pivoted wholly upon the ring d, and that there is no ring or cylinder projecting inwardly from the ring d, and forming Va frame, in which the valves move`,-aud, by extending across which, the valves shut off or close the month of the ventilator-flue,` the ring d forming thel opening registerto the flue and the valves shutting against the inner snrface'of the ring to close the ventilator.

The register and valves are'attached to the thimble as follows: i

At'the opposite ends of the cross-bar It are lips x, between Aeach of which and the face ot' the ring a groove is formed, (by the'lip andiring.) Each lip a: extends back of the tlange'b of thethilnble, cans-` ing the flange to be embraced between thelip and the ring, as seen at G, the ringvbeing removed by pressing it slightly upward, which` allows the 'lo'wei"Y lip to vslip over the iiange, and being attached to the thimble ,in the same manner, or by pressing the lower lip inl over the flange instead .of drawing it out.

I claiml Also, the combination of the pin f, the nuts t'u,

A ventilator-register, having valves pivoted to and the spring w, and the' hub g of the levers h i, when shutting against the flat inner surface of the cii'curelatively arranged, substantially as shown and delar register-ring d, to close the ventilator, substantially4 scribed.

as described. HUGH M. PHINNEY.

Also, the register-ring and its valves and valvev Witnesses:

operating mechanism `combined with the t'himble a, J. B. CROSBY,

substantially as shown and described. FRANCIS GOULD. 

